Folding square.



No. 844,205. .PATENTED PEB. 12, v1907.

` A. E. soLLBRs.

FOLDING SQUARE. APPLIOATION FILED sBPT.17',19o.'

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UNITED STATES PATENT OFFICE.

FOLDING SQUARE.

Specification of Letters Patent.

Patented Feb. 12, 1907.

Application filed September 17, 1906. Serial No. 334,837.

To @ZZ whom, it may concern:

Be it known that I, ALBERT E. SoLLERs, a citizen of the United States of America, residing at Mount Union, in the county of Huntingdon and State of Pennsylvania, have invented new and useful Improvements in Folding Squares, of which the following is a specification.

This invention relates to'improvements in folding squares designed for the use of carpenters and other mechanics, the object of the invention being to provide a device of this character which is adaptable for use as Van L-square or miter-square and is readily adjustable to set the parts thereof at different angles for indicating and obtaining different bevels for rafter cuts or pitches and the like, and which is further provided with means for securely holding the blade at any desired angular relation to the stock and to be folded in close compass, so as to be conveniently carried in the pocket.

In the accompanying drawings, Figure 1 is a plan view of a square embodying my invention, showing different positions of the blade in full and dotted lines. Fig. 2 is a view of the device as folded for convenient transportation. Fig. 3 is a perspective view of the meeting ends of the bracing arms or links. Fig. 1 is a sectional view through the same, on an enlarged scale, showing the pivot-clampl connection between said arms. Fig. 5 is a back view of the folded square.

Referring to the drawings, 1 designates the body or stock of the square, and 2 the blade thereof, which is pivoted at one end to one end of the stock, as indicated at 3, and is adapted to fold over and parallel with the stock, as shown in Fig. 2, to enable the square to be folded, so that it can be conveniently carried in the pocket. The square and blade are respectively provided with the ordinary rule-scales 4 and 5.

Bracing arms or links 6 and 7 are respectively pivotally connected at their inner ends to the outer ends of the stock and square, as indicated at 8 and 9, and a stoppin or projection 10 is provided upon the stock to limit the outward movement of the arm 6. The outer end of the arm 6 is formed with a threaded aperture 11 and a circular boss or stud 12, through which the aperture extends, which boss or stud forms a pivot portion for connection with the arm 7, which is provided with a pivot-opening 13 to receive the boss. A clamping-screw 14 engages the threaded aperture 11 and is provided with a shoulder 15 of greater diameter than the opening 13 to overlie the end of the arm 7 and clamp the same to the arm 6. The screw has a head 16, at the base of which the shoulder 15 is formed and carries a pivoted bail-handle 17, by which said screw maybe conveniently adjusted. It will be observed that by this construction the blade may be adjusted at any desired angle to the stock and held in adjusted position and that the form of pivotal connection between the bracing arms or links is such as to permit ready adjustment of said links to hold the blade in adjusted position and to permit the square to be folded in the manner shown in Fig. 2 for convenient transportation.

Pitch or bevel degree lines 18 and 19 are provided upon the face of the stock 1 and extendl outwardly to the inner edge thereof, said lines being respectively arranged at acute and obtuse angles with relation to the axis of the stock. These bevel or pitch lines may be suitably designated in practice by marks indicating the degree of pitch designated thereby, and provide a convenient means for cooperation with the blade and bracing-arms to enable the blade to be adjusted with relation to the stock at the desired angle for measuring or indicating pitchangles, and the angles at which rafter cuts and the like should be made in building construction.

As shown in Fig. 5, the back or reverse side of the stock 1 is provided with a table having columns or figures denoting pitchangles and having a longitudinal bottom row of numerals designating spans. By means of the degrec-lines 18 and 19, which are numbered to 95 accord with the different columns of pitchdegree numerals in the table, the operator may determine with certainty the extent of adjustment of the blade relative to the stock to measure any desired pitch-angle or span, it being understood that the lines 18 may determine the top and the lines 19 the bottom of the angles for rafter cuts. enables the mechanic to determine the span and pitch for any length of rafter in a ready and convenient manner.

From the foregoing description it will be seen that my invention provides a convenient form of square for the purpose described, which is simple of construction, may be in- IOO The table IIO expensively manufactured, and is adapted 'to be folded in close compass so as to be A blade pivoted a-t one end to one end of the .stock and adapted to fold over upon the same, bracing arms or links pivoted at their inner ends to the outer ends of the stock or blade, one of said arms being provided at its outer end with a threaded openingnand apivot-boss and the other arm having an opening for engagement with said boss, and a screw engaging the threaded opening in one arm and having a clamping portion overlying the opening in the other arm and bearing on said arm, whereby the arms or links are pivotally connected and are adapted to be clamped at any position in their range of adjustment.

2. A square comprising a stock, a blade pivoted at one end to one end of the stock and adapted to be folded over upon the same, said stock being provided With series of pitchlines arranged respectively obliquely and obtusely to the axis thereof, bracing-links pivoted at their inner ends to the outer ends of the stock and blade and pivotally connected together at their outer ends, and a clamping device associated with said pivotal connection between the links to secure them in adjusted position.

In testimony whereof I afliX my signature in presence of two witnesses.

ALBERT E. SOLLERS.

Witnesses FRANK H. HARRISON, J. H. MCCLURE. 

